The higher vector charmonium states,
\(\psi (4S)\) , \(\psi (5S)\)  and \(\psi _1(3D)\) , are still not well-established.
During the past decade, several \(J^{PC}=1^{--}\)  charmonium-like states,
\(Y(4230,4260)\) , \(Y(4360)\)  and \(Y(4660)\) , have been observed
in experiment [1]}. Some of them exhibit unusual properties that are very different
from the expectations as conventional \(c\bar{c}\)  states. In addition, although \(\psi (4415)\)  has been
well-established in experiment, its structure and quark model assignment still need to be studied.
